Perugia, Italy – An Italian publication revealed Wednesday that evidence found at the scene of Meredith Kercher’s murder was not analyzed for DNA until about one month and a half after the British student’s murder. Amanda Knox was convicted for the killing and is now appealing that conviction.

According to Oggi.it, investigators neglected to perform DNA tests for 46 days on a bloody sweatshirt found at the scene of the crime. Instead, the item of clothing sat at the bottom of a basket of soiled laundry, Walter Patumi – a forensic expert hired by Knox’s legal team – told Italian GQ, according to The Daily Caller.

To watch the video obtained by Oggi.it depicting the investigation and evidence collection, which took place on Dec. 18, 2007 — 46 days after Meredith’s murder, click here.

“I can’t tell you how embarrassed the police were when I showed them [the sweatshirt],” Patumi said.

Two independent experts appointed by the court have already reexamined the DNA used to convict Knox of Meredith’s killing, and found due to mishandling by investigators, it is likely tainted and unreliable.

Prosecutor Manuela Comodi admitted to ABC News last week that Knox’s conviction may not be upheld and she may walk out of prison a free woman at the end of her appeal proceedings.

Knox, 24, is appealing her Dec. 2009 conviction regarding the death of Meredith, 21, a British student with whom she shared a cottage in Italy. She was sentenced to 26 years behind bars in an Italian prison. Also found guilty of participating in the murder was Knox’s ex-boyfriend Rafaelle Sollecito, who was sentenced to 25 years in prison, and drifter Rudy Guede who had his initial 30-year sentence reduced to 16 as a result of an appeal.

To see a photo slideshow regarding the case, the evidence involved, and key players, click here.

The Caller also notes that a sweater worn by Knox after Meredith’s murder was found “intact” on her bed in April 2008 – six months after the slaying. According to the report, police had initially claimed Knox had burned the sweater because it had blood on it.

Knox’s appeal proceedings are slated to resume Sept. 23 with final arguments and a verdict expected about a week later.

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